AD/AL 250/37 - Third Stage Turbine Wheel - Replacement

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B02251 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Allison Turbine Engines - 250 Series

 

AD/AL 250/37 Third Stage Turbine Wheel - Replacement 9/79

Applicability: All 250-C28 series engines fitted with third stage turbine wheel P/No. 6898553 or 6898773.

 

Requirement: Remove affected Part Number Turbines from service.

 

Note: FAA Emergency AD Dated 19 July 1979 refers.

 

Compliance: 1. For turbines with more than 300 hours’ time in service - Within 25 hours’ time in service from 9 August 1979.

 

2. For turbines with less than 300 hours’ time in service - Before reaching 325 hours’ time in service.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.